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Quantum Audio STT2401A Manuel D’Utilisation

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ATAPI Interface 
Chapter 5 
Seagate Travan 40 Product Manual 
Page 63 
 
Speed Code: Speed code values are listed in the table below. The Speed Code may 
be set explicitly by MODE SELECT command, or implicitly when AVC ( Auto-
Throttle) is set to 1 (bit 4, byte 8 of page code 10h). If AVC is set to 1, MODE SENSE 
will report the actual speed selected to optimize data throughput. 
 
Code 
Meaning 
0h 
Use default speed. 
1h 
Use lowest tape speed. 
2h-Fh 
Use highest tape speed 
 
Block Descriptor Length: Specifies the number of bytes in the Block Descriptor. 
This value is 08. 
Block Descriptor 
 
Data Bits 
 
Byte 
7 
6 
5 
4 
3 
2 
1 
0 
Hex 
0 
Density Code 
XXh 
1 
2 
3 
MSB 
Number Of Blocks 
LSB 
00 
00 
00 
4 
0 
0
 
0 
0 
0 
0 
0 
0 
00 
5 
6 
7 
MSB 
Block Length 
LSB 
XX 
XX 
XX 
Density Code: This byte identifies the bit density and format of the media used by 
the drive. The value returned by this field is determined by the last MODE SELECT 
command, or is the default value based on cartridge type and/or previously recorded 
density following a power-up reset. 
Density Code 
QIC Reference 
Read 
Write 
46 
Travan
 
5, QIC-3220-MC 
Yes 
No 
*** 
Travan
 
40 
Yes 
Yes 
Number of Blocks: This field must be 0. 
Block Length: This field indicates the selected block length and mode. The 
STT3401A default block length is 512 bytes. The maximum fixed block length is 
1024 bytes. 
Parameters: MODE Sense Data pages are as specified in the MODE SELECT 
commands. See Section 0 for page, field, and bit specifications.